A seller is claiming the use of TPE (Thermal Plastic Elastomer) in their Yoga Mat is "designed to decompose in landfills, leaving behind only water and biodegradable components. PVC-free and contains no lates or rubber of any kind and no toxic materials are used in its production". They make these additional claims: Eco-friendly No heavy metals These claims leave the customer thinking the use of TPE is very "healthy" and reduces negative environmental impact. Any readers have insight or input on the veracity or accuracy of these claims? Thanks.